Follow Twenty-Two Creek the entire way, climbing continuously, but not steeply, through old-growth timber and a large talus slope. The trail is used year-round and is always very crowded on summer weekends. This is one of three Research Natural Areas on the district. It was set aside in 1947 to study the effects on water, wildlife and timber of an area left in its virgin state, as compared to similar areas under intensive management. A one-mile loop trail takes you around the lake. Please stay on the trail to protect rare plants and reduce erosion. The lake is in a glacier-carved basin on the north flank of Mt. Pilchuck. Fishing can sometimes be quite good as the lake is 53-feet deep.